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    Adaptive prediction structures
    1.
    发明授权
    Adaptive prediction structures 有权

    公开(公告)号：US10855988B2

    公开(公告)日：2020-12-01

    申请号：US16226594

    申请日：2018-12-19

    申请人： QUALCOMM Incorporated

    发明人： Guoxin Jin ,  Xianglin Wang

    IPC分类号： H04N19/149 ,  H04N19/139 ,  H04N19/11 ,  H04N19/159 ,  H04N19/132 ,  G06N20/10 ,  H04N19/172

    摘要： Systems, methods, and computer-readable media are described for providing improved video or image encoding, including adaptive prediction structures for encoding video frames. In some examples, systems, methods, and computer-readable media can include obtaining a sequence of frames; determining, based on frame statistics associated with a first frame in the sequence of frames, a prediction structure for encoding the sequence of frames, the prediction structure defining an order in which frames in the sequence of frames are encoded and a prediction distance representing a maximum distance permitted between referencing frames and reference frames in the sequence of frames, and the frame statistics indicating an amount of motion in the first frame. The systems, methods, and computer-readable media can also include encoding one or more of the sequence of frames based on the prediction structure.

    Zero block detection using adaptive rate model
    2.
    发明授权
    Zero block detection using adaptive rate model 有权

    公开(公告)号：US10587880B2

    公开(公告)日：2020-03-10

    申请号：US15940349

    申请日：2018-03-29

    申请人： QUALCOMM Incorporated

    发明人： Yang Yu ,  In Suk Chong ,  Xianglin Wang ,  Marta Karczewicz

    IPC分类号： H04N19/147 ,  H04N19/14 ,  H04N19/194 ,  H04N19/64 ,  H04N19/176 ,  H04N19/124 ,  H04N19/172 ,  H04N19/149 ,  H04N19/132

    摘要： A video coding device may be configured to estimate, based on a combination of a first parameter and a number of non-zero coefficients in a frame, a number of bits for non-zero coefficients of the frame, to encode the frame based on the estimated number of bits for the non-zero coefficients, to collect an actual number of bits used to encode the non-zero coefficients of the frame and an actual number of the non-zero coefficients in the frame, to update, based on the actual number of bits used to encode the non-zero coefficients of the frame and the actual number of non-zero coefficients in the frame, only the first parameter to form an updated first parameter, to form a rate estimation model using the updated first parameter and a second parameter, and to select, based on the rate estimation model, a coding mode for each block in the frame.

    Enhanced intra-prediction mode signaling for video coding using neighboring mode
    5.
    发明授权
    Enhanced intra-prediction mode signaling for video coding using neighboring mode 有权

    公开(公告)号：US10264280B2

    公开(公告)日：2019-04-16

    申请号：US15481303

    申请日：2017-04-06

    申请人： QUALCOMM Incorporated

    发明人： Wei-Jung Chien ,  Marta Karczewicz ,  Xianglin Wang

    IPC分类号： H04N19/593 ,  H04N19/176 ,  H04N19/186 ,  H04N19/11 ,  H04N19/46 ,  H04N19/196 ,  H04N19/463

    摘要： This disclosure describes techniques for intra-prediction mode signaling for video coding. In one example, a video coder is configured to determine, for a block of video data, a set of most probable intra-prediction modes such that the set of most probable intra-prediction modes has a size that is equal to a predetermined number that is greater than or equal to two. The video coder is also configured to code a value representative of an actual intra-prediction mode for the block based at least in part on the set of most probable intra-prediction modes and code the block using the actual intra-prediction mode. The video coder may further be configured to code the block using the actual intra-prediction mode, e.g., to encode or decode the block. Video encoders and video decoders may implement these techniques.

    STORING AND RETRIEVING HIGH BIT DEPTH IMAGE DATA
    7.
    发明申请
    STORING AND RETRIEVING HIGH BIT DEPTH IMAGE DATA 审中-公开

    公开(公告)号：US20190098325A1

    公开(公告)日：2019-03-28

    申请号：US15713065

    申请日：2017-09-22

    申请人： QUALCOMM Incorporated

    发明人： Cheng-Teh Hsieh ,  In Suk Chong ,  Xianglin Wang

    IPC分类号： H04N19/46 ,  H04N19/70 ,  H04N19/645 ,  H04N19/159

    摘要： In one example, a device for accessing image data includes a memory configured to store image data and one or more processors configured to code a plurality of bit length values for a plurality of block fixed length code length (bflc_len) values for a plurality of blocks of a tile or sub-tile of an image, the bit length values representing numbers of bits used to code the blfc_len values, code the bflc_len values for each of the plurality of blocks such that the bflc_len values have numbers of bits indicated by the respective bit length values, code the codewords for each of the plurality of blocks such that the codewords have the numbers of bits indicated by the bflc_len values for corresponding blocks of the plurality of blocks, and access the bit length values, the bflc_len values, and the codewords in the memory.